Centre for Integrated Nanostructure Physics (CINAP), Institute of Basic Science (IBS), Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Korea.
Centre for Integrated Nanostructure Physics (CINAP), Institute of Basic Science (IBS), Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea.
Sci Rep. 2016 Sep 14;6:33299. doi: 10.1038/srep33299.
A novel gas sensor consisting of porous, non-stacked reduced graphene oxide (NSrGO)-heaxfluorohydoroxypropanyl benzene (HFHPB) nanosheets was successfully fabricated, allowing the detection of dimethyl methyl phosphonate (DMMP), similar to sarin toxic gas. The HFHPB group was chemically grafted to the NSrGO via a diazotization reaction to produce NSrGO-HFHPB. The NSrGO-HFHPB 3D film has a mesoporous structure with a large pore volume and high surface area that can sensitively detect DMMP and concurrently selectively signal the DMMP through the chemically-attached HFHPB. The DMMP uptake of the mesoporous NSrGO-HFHPB was 240.03 Hz, 12 times greater than that of rGO-HFHPB (20.14 Hz). In addition, the response rate of NSrGO-HFHPB was faster than that of rGO-HFHPB, an approximately 3 times more rapid recovery due to the mesoporous structure of the NSrGO-HFHPB. The NSrGO-HFHPB sensor exhibited long-term stability due to the use of robust carbon and resulting high resistance to humidity.
一种新型气体传感器由多孔、非堆叠还原氧化石墨烯（NSrGO）-六氟羟丙基苯（HFHPB）纳米片组成，成功地用于检测二甲膦酸二甲酯（DMMP），类似于沙林毒气。HFHPB 基团通过重氮化反应化学接枝到 NSrGO 上，生成 NSrGO-HFHPB。NSrGO-HFHPB 3D 薄膜具有介孔结构，具有大的孔体积和高的表面积，可以灵敏地检测 DMMP，并通过化学附着的 HFHPB 同时选择性地发出 DMMP 的信号。介孔 NSrGO-HFHPB 的 DMMP 吸收率为 240.03 Hz，比 rGO-HFHPB（20.14 Hz）高 12 倍。此外，由于 NSrGO-HFHPB 的介孔结构，NSrGO-HFHPB 的响应速率比 rGO-HFHPB 更快，恢复速度约快 3 倍。由于使用了坚固的碳，NSrGO-HFHPB 传感器表现出长期稳定性，并且对湿度的抵抗力很高。
